Chapter III
Numerical Modeling
42
After the simulations, the results are presented in the form of labeled maps and comparative
tables for the four influential directions NNW (North-Northwest), N (North), NNE (NorthNortheast), and NE (Northeast). The simulations focus on several output parameters, including:
• Significant Wave Height (Hs) at:
1. 20 meters from the main breakwater of the Marina
2. 40 meters from the main breakwater Khireddine of the Port of Algiers
• Peak Wave Period: This parameter represents the duration between successive wave
crests or troughs. It indicates the time it takes for the most energetic wave to pass a
certain point.
• Mean Wave Direction: This parameter denotes the average direction from which the
waves approach the specified locations. It provides valuable information about the
prevailing wave patterns.
• Wave Power Energy: This parameter quantifies the amount of energy carried by the
waves at the selected locations. Wave power is an essential factor in evaluating the
potential for harnessing renewable energy from sea waves.
The Table III-7 presents wave simulation results for different return periods (2, 10, 30, and 100
years) at the Marina and Port of Algiers. It provides information on wave characteristics such as
significant wave height (í µí°» í µí± ), shoaling coefficient, peak wave period (í µí± í µí± ), mean wave direction,
and wave power. The data is organized based on simulated directions, including NNW (NorthNorthwest), N (North), NNE (North-Northeast), and NE (Northeast). For each combination of
direction and return period, the table specifies the offshore í µí°» í µí± , í µí°» í µí± at the base of the structure,
shoaling coefficient, í µí± í µí± , mean wave direction, and wave power. This information offers insights
into the wave conditions at the two locations under different return periods and simulated
directions.
Note:
It should be noted that all the simulations were associated with a constant wind for each
direction (see Table III-1). The average wind speed and direction were obtained after
processing a record from 1992 to 2022 from the WaveClimat database in Algiers Bay.
The coupling of a wind event with a wave event of the same return period results in
significantly overestimated results. For instance, coupling a 100-year wave and wind event
would yield a scenario that occurs once every 10,000 years, which is illogical considering the
average lifespan of maritime structures, typically ranging from 100 to 150 years. The
proposed solution is to determine the probability of occurrence for wind/wave combinations,
commonly known as joint or cross probability.
Numerical Modeling
42
After the simulations, the results are presented in the form of labeled maps and comparative
tables for the four influential directions NNW (North-Northwest), N (North), NNE (NorthNortheast), and NE (Northeast). The simulations focus on several output parameters, including:
• Significant Wave Height (Hs) at:
1. 20 meters from the main breakwater of the Marina
2. 40 meters from the main breakwater Khireddine of the Port of Algiers
• Peak Wave Period: This parameter represents the duration between successive wave
crests or troughs. It indicates the time it takes for the most energetic wave to pass a
certain point.
• Mean Wave Direction: This parameter denotes the average direction from which the
waves approach the specified locations. It provides valuable information about the
prevailing wave patterns.
• Wave Power Energy: This parameter quantifies the amount of energy carried by the
waves at the selected locations. Wave power is an essential factor in evaluating the
potential for harnessing renewable energy from sea waves.
The Table III-7 presents wave simulation results for different return periods (2, 10, 30, and 100
years) at the Marina and Port of Algiers. It provides information on wave characteristics such as
significant wave height (í µí°» í µí± ), shoaling coefficient, peak wave period (í µí± í µí± ), mean wave direction,
and wave power. The data is organized based on simulated directions, including NNW (NorthNorthwest), N (North), NNE (North-Northeast), and NE (Northeast). For each combination of
direction and return period, the table specifies the offshore í µí°» í µí± , í µí°» í µí± at the base of the structure,
shoaling coefficient, í µí± í µí± , mean wave direction, and wave power. This information offers insights
into the wave conditions at the two locations under different return periods and simulated
directions.
Note:
It should be noted that all the simulations were associated with a constant wind for each
direction (see Table III-1). The average wind speed and direction were obtained after
processing a record from 1992 to 2022 from the WaveClimat database in Algiers Bay.
The coupling of a wind event with a wave event of the same return period results in
significantly overestimated results. For instance, coupling a 100-year wave and wind event
would yield a scenario that occurs once every 10,000 years, which is illogical considering the
average lifespan of maritime structures, typically ranging from 100 to 150 years. The
proposed solution is to determine the probability of occurrence for wind/wave combinations,
commonly known as joint or cross probability.